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As the optimizer uses more and more AST stuff, it's now time to create an "AST" module. Initially it defines following AST datastructures: * declarations: `Decl` + derived classes * `Conformance` * `SubstitutionMap` * `Type` and `CanonicalType` Some of those were already defined in the SIL module and are now moved to the AST module. This change also cleans up a few things: * proper definition of `NominalTypeDecl`-related APIs in `SIL.Type` * rename `ProtocolConformance` to `Conformance` * use `AST.Type`/`AST.CanonicalType` instead of `BridgedASTType` in SIL and the Optimizer
79 lines
2.3 KiB
Swift
79 lines
2.3 KiB
Swift
//===--- Conformance.swift ------------------------------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2024 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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import Basic
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import ASTBridging
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/// Describes how a particular type conforms to a given protocol, providing the mapping from the protocol
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/// members to the type (or extension) members that provide the functionality for the concrete type.
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///
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/// TODO: Ideally, `Conformance` should be an enum
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public struct Conformance: CustomStringConvertible, NoReflectionChildren {
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public let bridged: BridgedConformance
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public init(bridged: BridgedConformance) {
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self.bridged = bridged
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}
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public var description: String {
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return String(taking: bridged.getDebugDescription())
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}
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public var isConcrete: Bool { bridged.isConcrete() }
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public var isValid: Bool { bridged.isValid() }
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public var type: Type {
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assert(isConcrete)
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return Type(bridged: bridged.getType())
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}
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public var isSpecialized: Bool {
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assert(isConcrete)
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return bridged.isSpecializedConformance()
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}
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public var genericConformance: Conformance {
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assert(isSpecialized)
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return bridged.getGenericConformance().conformance
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}
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public var specializedSubstitutions: SubstitutionMap {
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assert(isSpecialized)
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return SubstitutionMap(bridged: bridged.getSpecializedSubstitutions())
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}
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}
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public struct ConformanceArray : RandomAccessCollection, CustomReflectable {
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public let bridged: BridgedConformanceArray
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public var startIndex: Int { return 0 }
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public var endIndex: Int { return bridged.getCount() }
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public init(bridged: BridgedConformanceArray) {
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self.bridged = bridged
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}
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public subscript(_ index: Int) -> Conformance {
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bridged.getAt(index).conformance
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}
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public var customMirror: Mirror {
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let c: [Mirror.Child] = map { (label: nil, value: $0) }
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return Mirror(self, children: c)
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}
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}
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extension BridgedConformance {
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public var conformance: Conformance { Conformance(bridged: self) }
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}
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